Hair elastic



FIG. 1 is a perspective view of a hair elastic showing my new design;

FIG. 2 is a top view of the hair elastic;

FIG. 3 is a bottom view of the hair elastic;

FIG. 4 is a front elevational view of the hair elastic;

FIG. 5 is a rear elevational view of the hair elastic;

FIG. 6 is a first side elevational view of the hair elastic; and,

FIG. 7 is a second side elevational view of the hair elastic.

The broken lines shown in the drawings depict portions of the hair elastic that form no part of the claimed design. 

CLAIM The ornamental design for a hair elastic, as shown and described. 